Penny Johnson Books

Cuddly frog

By Penny Johnson

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Art power diplomacy

By Penny Johnson

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This is the first publication of its kind about the little known Government Art Collection. It presents the history of this eclectic collection, providing an insight into its changing and expanding...

William Nicholson

By William Nicholson

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Crucial Skills

By Tina Rae, Penny Johnson

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Seeking Palestine

By Raja Shehadeh, Johnson Penny Researcher

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Seeking Palestine

By Raja Shehadeh, Johnson Penny Researcher

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AQA GCSE 9 1 Physics for Combined Science Foundation Support Workbook

By Beverly Rickwood, Penny Johnson

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Physics

By Steve Woolley, Brian Arnold, Penny Johnson

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Edexcel International GCSE Science Double Award Student Book

By Jim Clark, Steve Woolley, Philip Bradfield, Brian Arnold, Penny Johnson

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Exploring Science

By Sandra Baggley, Steve Gray, Julian Clarke

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.